The U.S. Geological Survey Central Midwest Water Science Center completed a report (Over and others, 2023) documenting methods, results, and applications of an updated flood-frequency study for the State of Illinois. This landing page contains data releases associated with Over and others (2023), which include data related to the peak-flow frequency analysis at streamgages in Illinois, digital datasets of basin characteristics considered in the study, hydro-conditioned geographic information systems (GIS) layers used in the Illinois StreamStats application, and tables of data used to develop regional regression equations for ungaged areas of Illinois.
References Cited:
Over, T.M., Marti, M.K., O'Shea, P.S., Sharpe, J.B., 2023, Estimating Peak-Flow Quantiles for Selected Annual Exceedance Probabilities in Illinois: Illinois Center for Transportation Series No. 23-019, 71 p.,
https://doi.org/10.36501/0197-9191/23-019.
